add before_script call to the install script and remove environment variables which are not used anymore
add before_script call to the install script and remove environment variables which are not used anymore

Signed-off-by: Henrique Vicente <d390f26e2f50ad5716a9c69c58de1f5df9730e3b@gmail.com>

henvic/vehikel,henvic/vehikel,henvic/vehikel